It doesn't bug me as much with Stith. It's a small sample size, but he has shown he can score and handle the ball. Plus, for a freshman, he doesn't appear to be all that turnover-prone.
It does bother me with Boothe, because as boo3 said, he's an offensive black hole. If Boothe isn't going to distribute a ton (and if he's going to have a 1:1 assist-to-turnover ratio), he isn't good for much offensively. He's not a big threat from three and he can't finish inside. The best you can hope for when he drives is that he draws a foul. But most of the time, he either misses the layup while trying to change his shot–or the ball gets swatted into the fourth row.
I like Boothe. I thought he was a bit of a breath of fresh air when he came into the program. But he really hasn't progressed in three years. For someone with really no ability to score outside of the free throw line, they need to get more out of him.